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![T Steiner](https://ph-avatars.imgix.net/1644946/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
OnlyKey DUO is a USB security key that works virtually everywhere, supporting both USB-A and USB-C. Say goodbye to remembering passwords! Like a security swiss army knife, use as a password manager, MFA (FIDO2, TOTP, and Yubico® OTP), SSH, OpenPGP, and more.
![OnlyKey DUO](https://ph-files.imgix.net/1dc22a27-3438-49b9-bd13-d22ae446fda1.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
OnlyKey DUO
Open source Yubikey alternative with dual USB-C and USB-A
![T Steiner](https://ph-avatars.imgix.net/1644946/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
T Steiner
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OnlyKey DUO is available for pre-order now - https://onlykey.io/blogs/news/onlykey-duo-the-best-protection-for-all-of-your-usb-c-and-usb-a-devices
![OnlyKey DUO](https://ph-files.imgix.net/1dc22a27-3438-49b9-bd13-d22ae446fda1.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
OnlyKey DUO
Open source Yubikey alternative with dual USB-C and USB-A
![T Steiner](https://ph-avatars.imgix.net/1644946/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
OnlyKey is a USB security key that works virtually everywhere. Like a swiss army knife of authentication, OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
![OnlyKey](https://ph-files.imgix.net/4ab03ce9-5979-4f47-bdb6-2047c8c1e8f8.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
OnlyKey
OnlyKey is an open source alternative to YubiKey